Do your poor engine a favor and change or clean your filter more often! If the top side looked that bad, I can only imagine how bad the bottom side was given it really sucks a lot of dirt up from that lower intake cowl. Probably will pick up 15hp from simply putting a clean filter.

This is the exact example of why some people notice this big difference with an aftermarket filter, however its actually because they let theirs get so dirty that putting any clean filter in would feel like nitrous!